THE CONSTITUTION OF THE UNITED STATES OF AMERICA

Article II, Section 3

He shall from time to time give to the Congress Information on the State of
the Union, and recommend to their Consideration such Measures as he shall judge
necessary and expedient; he may, on extraordinary Occasions, convene both
Houses, or either of them, and in Case of Disagreement between them, with
Respect to the Time of Adjournment, he may adjourn them to such Time as he shall
think proper; he shall receive Ambassadors and other public Ministers; he shall
take Care that the Laws be faithfully executed, and shall Commission all the
Officers of the United States.